Bolt-gun.



No. 632,090. Patented Aug.. 29, i899. T. E. BENNETT.

BLT GUN.

{Appliction led Apr. 8, 1899.)

(No Model.)

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UNTTno STATT-Ls PATENT Grinch..

THOMAS il. llflNNE'll", GF NIHV IIAVEiT, CONNE'JTICUT, ASSIGNOR TO THENlNCllFlS'llR IHCPEATING ARMS COMPANY, Ol? SAME FRAGE.

BOLT-QGUN SPECIFICATION forming part of Letters Patent No. 632,090,dated August 29, 1899. Application tiled April 3, 1899. Serial No.711,504. (Noimodel.)

To zl'/ :f/mm 11mg/ #wwe/n4 lle it known thatl, THOMAS G. BENNETT, ofNew llaven, in the county of New Haven and rita-te ot' connecticut, haveinvented a new 5 Improvement in Bolt-Guns; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe letters of reference marked thereon, to be a full, clear, and exactdescription of the saine, zo and which said drawings constitute part ol'this speeilieation, and represent, in-

Figure l, a broken plan View of a `cnn conwith the breech-bolt in itsclosed and locked i5' posit-ion; Fig. a broken view of the gun invertical longitudinal section with the breechbolt in its closed andlocked position and with its hammer in its fired position; Fig. .3, abroken sectional view ofthe hammer; Fig. l, a detached perspective viewol' the bolt with the hammer removed; Fig. taehed reverse plan `View ot'the barrel and its receiver' extension; liig. 0, a detached perspeetiveview of the combined extractor, Sear, and trigger; Fig. T, an enlargedview in vertical section on the line a l; of Fig. 2, showing thefriction-lock.

My invention relates to an improvement in that class of bolt-guns inwhich the boltis located in a bolt-housing formed in a rearwardextension of the gun-barrel itself.

)io'e particularly my invention relates to an improvement upon a certaingun forming the subject-matter of an application for a patent tiled byJohn M. Browning February li', 1800, and serially numbered 795,703.

The particular object of my present inveniion is to'simplify the gunshown and described in the said Browning application by ,economy andsimplicity of construction are secured.

With these ends in view my invention consists in a longitudinally afndvertically movable combined extractor, scar. and trigger.

liy invention further consists in the combination, with a combinedextractor and scar, oi a holt coacting herewith and a frictionstop, themembers ol' which are respectively located upon the said combined partand bolt reducing the number of its parts, whereby l i i l l l i i i i li fshown I employ a combined part madein one piece and comprising atrigger A, a Sear 1S, and an extractor C. the extractor being loi catedat the forward end of the part, the trigger at the rear end of the part,and the Sear strncted in accordance with my invention about midway ofthe length ofthe part. The said part is located in a deep slot orchamber D, formed in the top of the stoel; E of the gun and controlledand operated by a spring' F, located iu the forward end of the Saidcinimber. The combined part has a vertical i rocking movement as well asa longitudinal y movement. 5, a broken dei For its vertical rockingmovement it is furnished at its extreme forward end with a pivot-pin a.,the ends of which bear against the lower face of the gun-barrel G at apoint very, little in rear of the forward end oi' a slot Gr', which, asshown in Fig. 5, extends from a point under the butt-end ot thegun-barrel propel' rearward throngli the tie or reach H, which connectsthe said .end of the barrel withthe bolt-housing Il', which may besaidtobe separated from the barrel by a loading-opening liz, loe-aieddirectly above the said reach or tie and extending downward bypreference at least' as tar as the axial center ofthe barrel. The saidslot G' receives the extractor C and the senr B, permitting the formerto engage with the heads of the cartridges. and permitting the latter tocoact with the breech-bolt l and the hammer J, located therein. Inspeaking of the extractor C my design has been to ideni tify theupwardly-extending hook formed at the forward end of the combinedpart.For the reception of the scar B the lower face oi the bolt is providedwith a longiI'ndinally-arranged slot K, the rear end of the right-handwall of whichhas alateral extension K', which permits the bolt to berocked on its longitudinal axis when in its cloned po-iitionby means ofits laterally arrangedA handle l, which moves back and forth in alongitudinal slot IOO . the impingement of its forward end against thebutt-end of the gun-barrel. When the handle l is lifted into alinementwith the slot H3, the turning movement of the bolt is stopped y by the'engagement of the left-hand side face B of the sear with the rearportion of the lefthand wall of the slot K inthe bolt at'ahont the pointK2, as shown in Fig. 4, whereby the turning movement of the bolt isstopped in Athe position of the registration of the bolthandle with theforward end ofthe slot, preparatory to drawing the bolt rearward bythehandle, at which time it enters the forward.

end of the slot and moves rearward therein. The sear of the' saidcombined part 'is formed upon its upper edge with a cocking-nose b,-which engages with the rear en dwall of a f chamber D, formed in thegun-stock E.

cocking-slot b', formed in the forward end of the cylindrical hammer L,which is located in the bolt I. When the hammer is drawn rearward intoits cocked position, the spring F,

before mentioned, immediately lifts upon the' part, so that the upperedge of the sear B will enter the said slot b' and bring the nose b ofthe searinto engagement with the rear wall of the said slot, thusholding the hammer cocked. The gun is now fired by depressing thetrigger A, the rear end of which is slightly projected out of theextreme rear end of the The trigger A, in' one View of it, is nothingmore than a long rigid rearward extension of the Sear. The bolt isformed with a cylindrical chamber K3 for the reception of the? hammer J,the saidl chamber terminating at its forward end in a Wall K4, formedwith a small hole K5,

which permits the'lfo'rward extension through it of the ring-pin j. Thehammer is formed with a longitudinalspring-chamber J' for the receptionof a spiral hammer-spring M, therear end of which normallyimpingesagainst' the forward end of thestem N of a button N', the said sternbeing entered into the eXtreme rear end of the hammer, in which it isheld" by the pin n, as shown in Fig. 3. The button N is knurled and isgrasped by the fingersforthecockingof thehammer. Thehamnier is connectedto the' bolt .by means of a heavy pin O, which pass-es transverselythrough the rear end ofthev .bolt and alsoA passes through alongitudinal slot O', formed in the rear end of the hammer, the forwardy end of this slot engaging withr the pin to de termine the deg/ree towhich the firing-pin may be retracted. Y

The rear end of the hammer-spring M is engaged for placing the springunder tension, with the-pin O mounted in the bolt. 1t is apparent thatif the said end of the spring were always'. engaged withv the said pinthe spring would exert a constant effort to puslrthe 'gimmediatelytiring-piu forward and would hold it forward' under tension. in order toavoid that objection, inasmuch as with the firing-pin projected to thelimit of its extension through the-forward end wall of the bolt theaccidental discharge of cartridges might take place in the event ofslamming 'the bolt into its closed position, l provide for normallyholdingrthe rea i:

end of the spring out of engagement with the;

'sa-id pin. lThis I do by extending the stemN of the button N inwardbeyond the pin, so as to form an abutment or seatfor the rear-'end ofthe spring, thus holding the spring. away from the pin for a distancerepresented by tl1e"- projection of the end of the firingpinj throughfAthe forward end wall of the bolt. The stern N is adapted to extendinward beyond the pin by forming the. stem with a slot N2,`Fig. 3, wideenough to receive the pin an-d deep enough to provide the play justabove called I for., Under thisconstruction the hammer, together withthe firing-pin, Ais free to move back and forth within the bolt entirelyinde pendent of the..hammerspring, so that if the cocking the gun assoon as the hammer has.

been retracted fora distance represented/by the unoccupied forward endoftherslo/t N2 in the stem N the rear end of the hammer-spring isbrought into contact with the pin O, which begins to put the springunder tension..

For the purposeI of frictionally holding the I-IO bolt in its closed andlocked position I pro- 4Vide a friction-holding device comprising twoheaded pin P and PT one/being located ina recess P2, fo med' in theunder face ofthefor- -Ward end of \t\h/e bolt, and the other being lo-Acated at the base of the rear end of the scar, as clearly shown .in Fig.6. These pins are relatively arranged, so that when the bolt is beingturned into its locked position the pin P will ride from right to leftover the pin P' in the combined part, which will at this time 'be forceddownward against the tension of its spring F, which as soon as the pinPhas rid- .'d'eri. yover the pin P' willv lift the combined part again,whereby the two pins will hold the bolt in its locked position. Here Imay remark that l provide sufficient play between the forward end of thecombined part and the walls of the forward end of the slot G and thefront face of the bolt to permit the for ment of the two pine of coursecannot take vyielding of the forward end of the combined part. \Vhen thegun is unlocked, the pin P snaps from left to right over the pin l, atwhich time the combined part retires downward slightly, as before.

It is apparent that my improved combined part, hammer, andfriction-holding device are not necessarily used in conjunction in thcsame gun, but that they may be used independently or in any desirablecombination. I would therefore have it understood that I do not limitmyself to the exact construction herein shown and described, but holdmyself at liberty to malte such changes and alterations as fairly fallwithin the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In abolt-gun, the combination with a longitudinally-movable bolt, ofa longitudinallyact as a Sear, for which purpose itis vertically movedfor coaction with the said hammer.

2. In a bolt-gun, the combination with a bolt having alongitudinrilchamber, of a hammer" located in the said bolt and longitudinallychambered, a spring located in the hammer,

' a pin mounted in the rearend of the bolt and passing through a slot inthe hammer, and a stem entering the outer end of the hammer and adaptedto extend inward beyond the pin so as to normally hold the outer end ofthe spring awa-y from the pin, whereby the hammer is normally relievedof the tension of the spring which is imposed upon it only when thehammeris drawn snciently rearward to permit the spring to impinge uponthe pin.

3. in abolt-gun, the combinationwitha longitudinally-movable androtatable bolt, of a combined extractor and sear located below the boltand adapted to be longit-ndinallyand vertically moved, and afriction-holding device, the members of which are carried `by the boltand combined part and arranged to hold thebolt in its closed andlockedposition.

i. Ina bolt-gun, the combination with a lon gitudinally-movable androtatable bolt, of a combined extractor and Sear located below the boltand adapted to belongitudinally and vertically moved, and coactingpin-heads mounted in the bolt and combined part in position to hold thebolt in its closed and locked position, the pin-head upon the boltriding over the pi n-head on the said part which yields to permit thepin-head on the bolt to pass its pin-head aft-er which the combined partrep covers its position.

5. ln a boltgun,the combination with a gunbarrel formed at its butt-endwith an integral receiver extension comprising a bolt-housing l and areach, which latteris formed in its bottom portion with a long slot, ofa longitudi- I nally-movable and rotatable bolt mounted in the saidhousing, a hammer mounted in the i said bolt and projecting rearwardlybeyond the same, and a combined extractor, scar and trigger, adapted atits forward end to act as an extractor, formed between its ends with asear which passes upward -through the said slot into position forengagement with the hammer, and adapted at its rear end, which extendsrearward beyond the rear end of the bolt, to be engaged and depressedfor disengaging the sear from the hammer, the said combined part beingarranged under the bolt in line therewith.

6. In a bolt-gun,the combination with agun barrel formed at its butt-endwith an integralv receiver extension comprising a tubular bolthousingand a reach, which latter is formed 1n its bottom portion with a longslot, ot' a longitudinally-movable and rotatable bolt, havA p ing aclearance-slot formed init, a hammer located within the said boltA andprojecting rearwardly fromfthe rear end thereof, and a combinedextractor and sear located below the bolt in a line paralleltherewith,and having its sear adapted to enter the clearance' slot in the bolt andcoact with the hammer for cooking the same, the said Sear being also constructedto coact with one wall of the slot in the bolt for limiting therotation of the bolt so as to stop it in proper position for its rearward longitudinal movement.

In testimony whereof I have signedthis IOO tog

specication in the presence of two subscrilo-l

